Pump-coupling.



l. WAHL,

PUMP COUPLING.

APPLICATION FILED Nov. I9. 1915.

Patented Oct. 30', 1917.`

INVEIOR By orneys,

WITNESSES UNITED STA w S PATE OFFICE.

JOHN WAHL, OF BROOKLYN, NEW YORK, ASSIGNOR TO A. SCHRADERS SON, INC., OFBROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

PUMP-COUPLING'.

Specification of Letters Patent.

Patented Oct. 30, 1917.

Application filed November 19, 1915. Serial No. 62,294,

in borough of Brooklyn, county of Kings,

city and State of New York, have invented certain new and usefulImprovements in Pump-Couplings, of which the following is aspecification.

T his invention relates to pump couplings for tire valves or othersimilar purposes.

The object of the present invention is to provide a pump coupling whichshall Ibe capable of ylitting valves of different diameters or threads.-Preferably the structure of the invention is formed partly upon the pumpitself, although this is not necessarily so. According to the preferredform of the invention the 'pump 1s provided .with two nipples whichcorrespond in diameter and thread to the different valves which thecoupling is intended to fit. A-lhe pumptubeis provided with a couplingmember at each end, one of which is ada ted to fit one valve and theother of which 1s adapted to fit the second valve. certain otherfeatures of improvement which will behereinafter more fully described.

Referring to the drawingswhich illustrate'one form of the invention,-v

Figure 1 is a view of a lower part of a pump', showing the coupling indiametrical section.

Fig. 2 is a similar viewwith the pump tube reversed.

Fig. 3 is a section on the line 3-3 in Fig. 1.

Fig. 4 is a section on the line 4-4 in Fig. 1.

Figs, 5 and 6 are sectional views of modifications. l

provided with a coupling D which is adapt# ed to fit a valve ofdifferent diameter, in the case shown one of considerably largerdiameter than that adopted to be engaged by the coupling B. Either orboth of the couplings Band D may be constructed to Swivel on the tube,in which case the con- The invention also includes struction illustratedat D may be used. In this construction the coupling has a sleeve orunion E swivcled to a ange F formed on the member Gr, va packing H beingcarried within the union to make a tight joint with the top of thevalve. If the swiveling feature is not desired, the construction of the-'coupling member B maybe followed, in

which case the coupling member is formed integral with "the" part I, andis provided with a tapered seat J designed to make contact with thevalve nipple.

It will be observed that by turning the ytube and coupling members endfor end a leak-tight connection-with several types of valve may be made.

Means are provided for connecting either end of the coupling tube to thesource of air supply, Preferably in the case of pumps, such means arecarried directly by thepump. In the construction shown the pump isprovided for this purpose with a nipple L which has a screw-threadedportion M designed to receive the coupling member D, and ascrew-threaded portion O designed to 'receive the coupling member B;When the coupling D is screwed on the pump, a tight joint may be made bythe packing H whlch bears against the part O of the ump nipple. Apacking P may also be int uced between the end of the coupling and ashoulder Q formed on the pum -nip le. When the v coupling B is screwe ont e pump nipple a tight joint may be made by a packing S which is rhelda ainst a shoulder T formed on the nipple. r any other means maybeprovided to make a tight joint.

It' is obvious that instead of the nipple being directly connected tothe pump, it may be interposed at any place in the pipe line.` 95

to a 'short length of tube. In Fig. 5 is shown 1.00

a construction, however, in which the two coupling members are connectedtogether. In using this construction the nipple will be connected to theend of the pump tube. In

this construction B is the smaller coupling 105 member and D the largercoupling member, these being swiveled together as shown, although theymay be constructed in one piece as illustrated in Fig. 6. Since thecoupling members are usually adapted to screw on 110 @1 manege theoutside of the pump connecting portion of the valve, it is preferred toconstructJ the pump nipple or its equivalent withlexternal threads, sothat the coupling members ma screw on it in like manner. The arrangementof threads may, however, be reversed if desired. l

While l have shown and described several modifications of the invention,it will be understood thetl do not Wish to he limited thereto,"sincevarious changes may be made therein Without departing from the spirit ofthe invention.

What l claimis 1. A coupling' for pumps or the like, having two couplingmembers facing in oppofsite directions, said members being adapted forconnection with tire valves having different pump connecting portions,in cornbination'with a nipple .adapted for connection with either ofsaid coupling members.

2. A. coupling for pumps or the like, having two diierent threads, incombination with a reversible coupling device having two couplingmembers each adapted to be connected with oneo said threads.

3. A coupling for'pumps or the like, coinprising a nipple having'twodierent external threads, in'combination with a coupling device havingtwo coupling members formed with internal threads, each of Said membersbeingv adapted to screw onto one of the'threads of said nipple.

4. A coupling for pumps. or the like, comprising a tube having dierentcoupling members at opposite ends, in combination with a nipple adaptedto engage both said coupling members.

5. A coupling for pumps or the like, comprising a, tube having dierentcoupling members at opposite ends, in combination with a nipple havingtwo screw-threaded portions in axial alinement, the nipple being adaptedto engage both of said coupling members.

In witness whereof, li have hereunto signed my neme in the presence oftwo subscribing witnesses.

JOHN WAHL. Witnesses:

E. E. MYERS, FRED WHITE.

